Mechanical Properties and Microstructures of Mg-Al-Zn Alloys with High Aluminum Contents
The effect of Al contents on the properties and structures of AZ80, AZ91，AZ131 and AZ151 magnesium alloys has been studied. The experiments of homogenization treatment, hot extrusion, and annealing treatment are carried out in order to study the effects of these processes to the properties and structure of AZ80, AZ91, AZ131 and AZ151 magnesium alloys. The parameters of homogenization treatment (420℃×24h, 420℃×36h) determined by DSC and metallurgical photo are sufficient which ensure the eutectic phase melt into magnesium matrix greatly. The strength of extruded bars shortly after homogenization treatment increase (Rp0.2 from 232 to 310MPa), but elongation decrease (A from 12 to 2.5％) with Al contents. The differences and causes of structure and mechanical properties of extruded bar after the process of aging are analyzed in detail by tensile experiments, hardness measurement, and optical observation.
Magnesium Alloy AZ80 AZ91 AZ131 AZ151 Extrusion Homogenization Aging Mechanical Properties Microstructure
Xinggang LI Kui ZHANG Yongjun LI Xin ZHAO Xujun MI
State Key Lab for Fabrication & Processing of Non-ferrous Metals, Beijing General Research Institute for Non-ferrous Metals, Beijing 100088
国际会议
重庆
英文
801-805
2008-06-09（万方平台首次上网日期，不代表论文的发表时间）